Cdiytool 50 Pcs Id 125Khz Writable Rewritable T5577 Fob Tag For Rfid Writer(Black)

Note: You Cannot Add Them To Rfid Locks Directly. You Must Write Data Into Them By A 125Khz Rfid Card Writer Before Use. They Are Blank Tags, No Data Inside Writable &Amp; Rewritable. It Can Be Erased And Written 100,000 Times. Suitable For Making New And Back-Up Tags, With The 125Khz Rfid Card Writer/Copier. Chip: Atmel T5577 (Compatible With Other Universal 125Khz Tags). Approx Size: 1.4*1.1*0.2 Inch. High-Quality Copper Coil Inside. Casing Material: Abs Plastic. Waterproof &Amp; Durable.&Nbsp; Package Include: 50Pcs T5577 Rfid Rewritable Red 125Khz Keyfobs.